Nifedipine concentrate stabilized against the influence of light and a process for its preparation
US4904699A · kind A · utility
41Cited by
4References
16Claims
0Family size
Inventor
Key dates
| Filing date | Dec 7, 1987 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Dec 7, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/44
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A nifedipine concentrate stabilized against the influence of light is described, characterized in that it contains nifedipine, polyethylene glycol, from 0.5 to 20% by weight of Vitamin B.sub.2, based on the nifedipine, at least one surface-active agent and optionally conventional carriers. A process for the preparation of the nifedipine concentrate and a medicament containing nifedipine and its use for the production of pharmaceutical preparations are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.